The script now checks the board ID and if the board's a BLO PR, it checks the
version of the gateware and adapts the starting address of the MultiBoot
hardware module according to the gateware's memory map.

This is necessary due to the fact that the (soon-to-be-released) v3.0 gateware
changes the memory map and places the MultiBoot module at a different address.

NOTE: not yet tested with old gateware versions, but should work